var one = new Vue({
    el:"#app-one",
    data:{
        title:"app one content"
    },
    methods:{
        
    },
    computed:{
        greet : function(){
            return "Hello App One";
        }
    }
});

var two = new Vue({
    el:"#app-two",
    data:{
        title:"app two content"
    },
    methods:{
        changeTitle: function(){
            // 修改其他Vue实例化的内容
            one.title = "app one content => app two content";
        }
    },
    computed:{
        greet : function(){
            return "Hello App Two";
        }
    }
});